Table 2 Zone of inhibition (mm) of SeNPs synthesized from Citrus paradisi (Grapefruit) fresh peels extract in comparison with the standard drug and control extract against bacterial pathogens.

From: Biogenic selenium nanoparticles (SeNPs) from citrus fruit have anti-bacterial activities

Standard and sample

Replicates

E. coli

M. luteus

B. subtilis

K. pneumoniae

Standard drug

R1

34.8

36.1

33.6

33.8

R2

33.9

35.8

34.2

35.1

R3

33.3

33.1

34.2

33.1

Mean ± SD

34 ± 0.754

35 ± 1.652

34 ± 0.346

34 ± 1.014

10 mM

R1

13.5

9.9

12.4

13

R2

12

10.1

10.8

12.7

R3

10.5

10

12.8

13.3

Mean ± SD

12 ± 1.500

10 ± 0.100

12 ± 1.058

13 ± 0.300

12 mM

R1

21.4

19.3

18.8

20

R2

20.1

20.2

19.2

21.6

R3

18.5

20.5

19

18.4

Mean ± SD

20 ± 1.452

20 ± 0.624

19 ± 0.200

20 ± 1.600

  1. p-value < 0.05.